A worker passes a sack of rice to other workers inside a National Food Authority (NFA) warehouse in Taguig City, south of Manila March 26, 2012. The Philippines is close to signing a government-to-government rice supply agreement that would make Cambodia a potential supplier of the grain staple to Manila, along with Vietnam and Thailand, agriculture officials said on Monday. REUTERS/Cheryl Ravelo (PHILIPPINES - Tags: AGRICULTURE BUSINESS POLITICS)